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FLYTRAP A/EWS Volume 7 Number 1 PRICE $2. 50 July / August i September 1993 Free with membership NEWSLETTER OF THE CARNIVOROUS PLANT SOCIETY OF NSW 1qq3 / 1qq4 OFIryCE REARERS. Edilors reporl Denis Daly PRESIDENT Denis Daly (02) 526 1272 VICE PRESIDENT Ken Harper (02) $9 4n4 Recently lwrote to the committee of the ACps oxpressing serious concerns about SECRETARY Wesley Fairhall (02) the 546 5555 various concepts raised by the committee of the Acps in regard to ths matter of amalgamation. I TREASURER Joan Fairhall (02) 546 ssss believe that potsntially acrimonious matters aro best broughi to the fors without "clear SEED BANK MANAGM, Denis Daly (02) 526 1272 delay io ths ai/' and then to gst on with nggotiations 'stew EDITOR Denis Daly (02) 526 12't2 rarther than let them in the background". LIBRARIAN Denis Daly (02) 526 7272 The committee of the ACPS does not believe that local branches can be financed wilhout ALL CORRESPONDENCE (including articles) TO: an.unacceptable increase in subscriptions. The committee of the CPS of NSW believes that all The C.P.S. of N.S.W. existing local branches must be naintained and new ones encouraged to form. The ACps P.O Box 87 committee has taken a step back from "total amalgmation' and nowfeels that only the joint venture Burwood NSW 2134 journal option is viable at this time, Howevsr as most of the membership subscripiions are associated with the journal costs this 'joint venture journal' proposal Meetings are regularly held on the second Friday of the following months does ngt resolve the issue ot the continued financing and existence of local branches. such a is not Fcbruary, March, April, (May in lie of AFil I the snd Friday of AFril ts C@l Frtd.y) June course recommended. (AGM), August, Septembcr, October and November TIME: 7.30 - 10.00pm Members are requested to become involved in this amalgamation process by thinking in VENUE: Woodstock Communiby Ccnhe, Church St, Burrvood. depth about amalgmation and then letting us know your views and suggesiions on this matter. MEMBERSHIP SI'BSCRIPNONS ARE NOW OVERDUE FOR 1993/1994 CURRENT MEMBERSHIP RATES Some Notes Single Membership within Australia $A15 0n Utricularia subulata Fobert Gibson Family membership within Autralia $A15 Overseas Membership $A17 Utricularia subulata is a commonly found species in most carnivorous plant collectigns, even of those who ars not partjal to this genus. The reason is due to the weedy nature of this Please make cheques/money orders payable to the Carnivorous Plart Society of NSW species which has enabled it to cover the greatest natural range of any specie! in the genus flaylor, 1 989) {1 l. lt is tlrerefore not surprising that a number of forms ol this genus exiit, and that CONTEI'fiS is the gist of this article. Editors Report Denis Daly Some notes on Utdcularia subulata Hobert GIbson Cultivation ol Tuberous Drosera Robert Gibson l(*- 6mm_..--)l l&penthes cultivatjon Ken Harper K-4* -+l Camivorous Plants around Melboums and ln Western Victoria Robert Gibson L Drosera adelae Ken Harper l ar^ ]oll ScaTe ' ;fu. )mm"J ,N \A*, The views published in his magazine are those o{ d're autho(s) and are not necessanly those of he Carnivorous I Plant Society ot NSW. l While every ef{ort will be made to print artjcles submjtted in heir entirity, in one edition, he editor reserves the righl to abridge or publish in two or more parls any lenghty artjcle. fl4 0her organisatlons are reminded hal as a matler of courtsey, th€ permisston of dre Carnjvorous Plant Society of U. subulab l9-10-199o NSW and/or the autho(s) should be sought belore repnnting any article published in thrs journal. Hdiz6t:l pile ydlow + n@l yeUow U. rubulau F6 N,bcqde Univmiry Uppc + lowa Up + peLt! - rich goldm erdd lpu jut rh6h, rnd htddh by, the Nde- ovrr€ uppq Up whld srccly y.Uow (rct tuo bne y€ilow ar rhoq ln q10-m It is worthwhile taking a closer look at ths chasmogamous, or lully developed, flowers ol this species. Not plesant produced The species has tlre annoying habit of producing cleistogamous flowsrs, that is, flowers only are they a change from he more commonly small, white cleistogamous flowers but they also reveal the amount 0l variatjon within this which fail to fully open. These are dull whits sfuctures about 2mm across and long and are species in cultivation. produced throughout he year. These flowers self-pollinate and the fins, highly viable ssed matures several weelG latsr. REFERENCES {1 I Taylor, P. 1 989. Kew Eulletin Additional Series: The Genus Uficularia - a taxonomic monograph. Her Majest/s Shtionary Office, London, pp. 724. Fortunately this species also produces flowers which develop fully over a few weeks in mid {21 Schnell, D.E. 1976. Carnivorous Plants of he United Slates and Canada. John F. Blair, Wnston.Salem, spring to early produced greater summer. They appear to be in abundance if the soil begins to dry North Carolina, pp. 125. out, or if grown in a greenhouse. They are yellow, with a 3- lobed Iower lip to 3mm wide by 6mm across, with a distjnct bllobed palate. The upper lip 4mmm across by 2 to 4mm high. ln Sydney I have found two distinct forms which differ in their outline. Cultivalion ol Tuberous Drosera Hobert Gibson Tuberous Drosera area diverse yet distinctive group ol sundew, which grow lor only part of the year and seasonally retreat to their underground rootstock. All known species are native lo Australia, with the greatest concentration in the south-west corner of Western Australia. A few species occur in soulhern and eastern Australia, two of which also occur in New Zealand, and one of which extends into South East Asia. Cultivation ot these sundews is not diflicult provided that the dormancy needs are met. THE SPECIES Three basic growth forms are recognised. The 'Rainbow Sundews" (Slack, 1 980) have 6. thin ersct or tailing stems, with peltate stem leaves and a terminal inflorescence. ,] The "Fanleaved" sundews have spathulate to reniform leaves, often strongly folded, with ql r either auxiliary or terminal inflorences. \ ".( ll The rosetted forms have lew-leaved rosettes to 12cm diameter, with an erect, often illl[]i terminal, inflorescence. These forms are nicely illustrated in Lowrie (1987 and 1 9B9a). \,\ f\ a-x' tu- 38 species and 24 subspecies (Appendix 1 ) are currently recognised of which lhere are 22 species and 12 subspecies of 'Fainbow Sunded';4 species and 6 subspecies of'fan-leaved" U. subul.ta 21,1 U. subulata 2?-l sundews; 12 species and 6 subspecies of rosetted Drosera (Lowrie, 1989a, 1989b, j987; Bates, 1991; Lowrie and Carlquist 1992; Lowrie and Carlquist 1990; Lowrie and Marchant, 1992). The form which came with most of my Sarracenias has a distincUy 3- lobed lower lip, with Additional species and subspecies may yet to be recognised dus to the incredible variaton lound the two side lobes at approximately 90 degrees to the central lobe. lt's upper lip is up to 4mm tall within these plants. ln addition most species occur in a range of colour forms. and extends distinctly above lhe palate. lt differs from the form which I obtained from Macquarie University in which the 3 lobes of the lower lip are less well defined and the ovate upper lip GROWTH PATTERN scarcely rises above the palate. 0ther forms may occur amongst carnivorous plant collections in Sydney, but they have not yet been recognised due to the short period of time in which these fully- fte majority of species occur in areas which have a Meditenanean climate, is developed flowers are produced. that one in which the majority of the rain falls within the cooler months, and summers are hot and dry. Tuberous Drosera in this situation survive the seasonal summer drought underground, as a tuber with a Bothlocal formsdifferfromtheformillustratedbySchnell I2j (1976 page9l).Thislorm dormant growth bud. During late-summer/early-autumn has an orange-yellow palate with a broadly 3- lobed lower lip. The upper lip rises well clear of the dormancy is broken and the tuber palate. produces an underground shoot (or stolon) from the tuber, lhis reaches the surface typically in autumn, usually at the time that the ambient air conditjons are cooling, and becoming more humid. Most forms of Drosera.auriculata and Drosera peltala in eastsrn Austalia generally follow the growth pattsrn of other'Bainbow sundews'. However Drosera peltata var. graiilis, .nd l.s. often olher varianh of sither species grow in summer, when temp€raturs and witer avaitability ars lavourable for growth. CULTIVATION Tuberous Drosera are easy to cultivale provided that the plants are given a dormant period- They ars abls to grow in a range of soil media; however in cultjvation I use ons-part "Novobalt'p€at to two-parts quartz sand mixture. The later I obtain from drains on our bushland property, which contains a range of natural organic matter. However, quarE sand may be readily obtained from nurseries. Avoid sand collected from beaches and river'beds as these ietain toxins (s.9. salt, pesticides, etc.) which will not be removed by washing. Although the plants develop only a small root systsm lhey do best in large pots. This is due to both the generally large size of the plants, and the good temperature and moiiture conserving properties plastic of a relatively large amount of the potting mix. pots are recommended due to their impervious nature, and Droscra whittakcrii sso abenans 70% tull sie) the optimum sizes are between 10 and 20 cm diameter.
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  • The Drosera Peltata -D

    The Drosera Peltata -D

    J. Adelaide Bot. Gard. 3(1): 91-100 (1981) THE DROSERA PELTATA -D. AURICULATA COMPLEX Barry J. Conn Department of Botany, University of Adelaide, G.P.O. Box 498, Adelaide, South Australia 5001. Abstract The correct authority of Drosera pehata is shown to be Thunberg and a specimen on Herb. Thunberg 7720 (UPS) is chosen as the new lectotype of this species. D. pe/tata and D. auriculata are variable taxa which consistently intergrade in parts of their wide range. As a consequence, D. auriculata is reduced to a subspecies of D. pe/tata. A description of D. pe/tata, a key to the two subspecies and descriptions of each are presented. Introduction While preparing accounts of the genus Drosera for the 'Handbook Flora of Papua New Guinea' and 'The Alpine Flora of New Guinea', I noted an apparent difference between my initial concept of Drosera pelt ata and van Steenis' (1953) circumscription of this species. Upon further investigation, it was soon evident that this species had been variously interpreted by different authors. Furthermore, some of the New Guinea material appeared to be intermediate between D. pelt ata and D. auriculata. Therefore, I decided that it was necessary to study material of these two taxa over their full range, so that the New Guinea situation might be resolved. During a brief visit to the Royal Botanic Gardens, Kew, in 1978, the type material of the various taxa were studied, but only with reference to New Guinea. It is only recently that I have become aware of some of the broader taxonomic and typification problems within the genus.